ICD-10-CM 2027
ICD-10 code for postoperative status ankylosis
From the official ICD-10-CM alphabetic index entry “Ankylosis (fibrous) (osseous) (joint) › postoperative (status)”. Page updated September 29, 2026.
About coding postoperative status ankylosis
The ICD-10-CM code for postoperative status ankylosis is Z98.1 (Arthrodesis status).
Within Z98 (other postprocedural states), Z98.1 is specifically for arthrodesis status. Related codes cover intestinal bypass and anastomosis status (Z98.0), presence of cerebrospinal fluid drainage device (Z98.2), post therapeutic collapse of lung status (Z98.3), cataract extraction status (Z98.4), sterilization status (Z98.5), angioplasty status (Z98.6) and other specified postprocedural states (Z98.8).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 951 (Other Factors Influencing Health Status, relative weight 0.5577), in MDC 23 (Factors Influencing Health Status and Other Contacts with Health Services), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
Common questions about postoperative status ankylosis ICD-10 codes
What is the ICD-10 code for postoperative status ankylosis?
- Z98.1 — Arthrodesis status.
Is Z98.1 billable?
- Yes. Z98.1 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can Z98.1 be used as a principal diagnosis?
- No. It is not acceptable as the principal diagnosis for an inpatient stay; it may be reported as a secondary diagnosis.
Is Z98.1 a CC or MCC?
- No. Z98.1 is neither a CC nor an MCC under MS-DRG v44.0.